Can you supply the mod_wsgi configuration you are using in Apache configuration file.
I would need to see mod_wsgi directives such as WSGIDaemonProcess, WSGIProcessGroup, WSGIApplicationGroup, WSGIScriptAlias and how they are used in the context of Apache configuration. Graham > On 14 Dec 2021, at 1:47 pm, Lalith Maddali <[email protected]> wrote: > > Hi All, > > Occassionally users reported that UI was very slow. When we dig deeper > we found that some requests never got a response back, rather after > loadbalancer timed out it returned 504 status code. > > Most API calls are high in request size (due to users saving a lot of text > data back to server). I saw some blogs saying that large request sizes can > bloat the memory consumed by django process. We were definitely hitting peak > memory due to this. > > We introduced maximum-request setting to kill process once it reaches this > limit. It was fine until we hit this weird issue of timeouts for seemingly > simple API calls. > > Digging further, we found that in Apache logs there are 403 status codes, it > happens right during the time Apache restarts the processes as > maximum-request setting is reached. We could see some logs of django process > start logs around the same time. > > Question is why do we have 403? In our other production servers this was > never an issue, only on this one application, Apache keeps the requests > dangling and later 403 and not sending to the active processes. This is > requiring us to periodically do apache graceful restarts. This is not elegant > solution, but any insight into what to improve would be great. > > We also have New Relic installed as middleware. We found that a process > restart takes more than 20 seconds. Is this the root cause? How do we deal > with improving process restart? > > > > Thanks, > Lalith > > -- > You received this message because you are subscribed to the Google Groups > "modwsgi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/modwsgi/4cb4025a-7dc6-4993-8dd6-78f7492a0607n%40googlegroups.com > > <https://groups.google.com/d/msgid/modwsgi/4cb4025a-7dc6-4993-8dd6-78f7492a0607n%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "modwsgi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/modwsgi/2D647403-2272-4FFE-8376-5E26630D9DE8%40gmail.com.
